Section 139 (1.8L - Engine Controls - On Board Diagnostic (OBD), Generic Scan Tool Engine Code(S): AMB)
WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
- Generic Scan Tool
- On Board Diagnostic (OBD)
- Characteristics of On Board Diagnostic (OBD)
- On Board Diagnostic (OBD), technical data
- Malfunction Indicator Lamp (MIL) -K83- in instrument cluster
- Electronic Power Control (EPC) Warning Lamp -K132- in instrument cluster
- Safety precautions
- Connect diagnostic tester
- Select diagnostic mode
- Test box, connecting for wiring and component test
- Mode 1: Check measured values
- Mode 2: Checking operating conditions
- Mode 3: Check DTC Memory
- Mode 4: Reset/erase diagnostic data
- Mode 5: Check oxygen sensor output signals
- Notes
- Test requirements:
- Work procedure
- Notes
- Evaluation test-ID 01: Rich to lean sensor barrier voltage
- Evaluation test-ID 02: Lean to rich sensor barrier voltage
- Evaluation test-ID 07: Minimum voltage at sensor for test cycle
- Evaluation test-ID 08: Maximum voltage at sensor for test cycle
- Evaluation test-ID 129: Current value of oxygen sensor signal
- Evaluation test-ID 130: Specified value of oxygen sensor signal
- Evaluation test-ID 131: Dynamic value
- Evaluation test-ID 132: Shift of oxygen sensor regulation before catalytic converter via oxygen sensor regulation behind catalytic converter
- Final procedures
- Mode 6: Check test results of components that are not continuously monitored
- Mode 7: Check test results of components that are continuously monitored
- Mode 8: Tank leak test
- Mode 9: Vehicle information
- Readiness code
- Diagnostic Trouble Code (DTC) tables:
- On Board Diagnostic (OBD)